Gecko [ 167.86.127.34 ]

Name	Size	Permission
doc.go	14.47 KB	-rw-r--r--
errors.go	1.03 KB	-rw-r--r--
errors_test.go	2.35 KB	-rw-r--r--
example_test.go	11.82 KB	-rw-r--r--
export_test.go	219 B	-rw-r--r--
fmt_test.go	56.74 KB	-rw-r--r--
format.go	13.19 KB	-rw-r--r--
gostringer_example_test.go	1.55 KB	-rw-r--r--
print.go	30.18 KB	-rw-r--r--
scan.go	31.99 KB	-rw-r--r--
scan_test.go	39.27 KB	-rw-r--r--
stringer_example_test.go	551 B	-rw-r--r--
stringer_test.go	2.11 KB	-rw-r--r--

Code Editor : errors.go

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package fmt

import "errors"

// Errorf formats according to a format specifier and returns the string as a
// value that satisfies error.
//
// If the format specifier includes a %w verb with an error operand,
// the returned error will implement an Unwrap method returning the operand. It is
// invalid to include more than one %w verb or to supply it with an operand
// that does not implement the error interface. The %w verb is otherwise
// a synonym for %v.
func Errorf(format string, a ...interface{}) error {
	p := newPrinter()
	p.wrapErrs = true
	p.doPrintf(format, a)
	s := string(p.buf)
	var err error
	if p.wrappedErr == nil {
		err = errors.New(s)
	} else {
		err = &wrapError{s, p.wrappedErr}
	}
	p.free()
	return err
}

type wrapError struct {
	msg string
	err error
}

func (e *wrapError) Error() string {
	return e.msg
}

func (e *wrapError) Unwrap() error {
	return e.err
}

${this.title}

Code Editor : errors.go